3 Answers
3

I suspect that /dev/sda1 is already mounted under /media/ACER. Nautilus automatically mounts partitions when selecting it on the left side. You cannot mount a partition multiple times (leaving out --bind mounts).

So what is the solution to this issue?? You did not tell!
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HanynowskyNov 13 '11 at 2:14

@Mediterran81 The solution is using the old mount point OR unmounting the old one. If you open a terminal you can get a list of mounted filesystems by running mount without arguments.
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LekensteynNov 13 '11 at 10:02

Ok, thanks, that is logical. It just happened I did not understand why the system was unable to overwrite infos about the same mounting point. Actually, I uncommented the line corresponding to the External Drive that matters, in fstab file (using dynamic mounting instead of static one) and everything is back to normal! Thanks for the confirmation :)
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HanynowskyNov 14 '11 at 0:12